Subject Test
Note:
You are attempting question 7 out of 12
If f (x) = 2x+1, g(x)=r? +2 then (gof)(x)is
(a) 4x2 + 4x +1
(b) 4x2 + 2x + 3
(c) 4x2 + 4x + 3
(d) 2x² + 4x +3
Answer
A
C
Suomi
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Answer:
(fog)(x)=f(g(x))=2(3x+2)−1=6x+4−1=6x+3=3(2x+1)
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